A green fluorescent ink for fluorescent pens is disclosed, which comprises the following weight fractions of raw materials: edible colorant 6 to 15 parts, nano-sulfur zinc 1 to 3 parts, nano-zinc oxide 1 to 3 parts, glycerol 3 to 6 parts, propylene glycol 3 to 7 parts, ethanolamine 2 to 8 parts, phosphate 5 to 10 parts, non-ionic surfactants 0.1 to 0.3 parts, anionic surface active agents 0.1 to 0.3 parts, and deionized water 15 to 20 parts. The advantages of the invention are as follows: a green fluorescent ink for fluorescent pens, which abandons traditional fluorescent agents, adopts nano-inorganic materials, is safe, environmentally friendly, non-polluting, and harmless to human health.
